Transmission gearing



Feb. 25, 1936. A w, HERRINGTON 2,032,318

TRANSMISSION GEARING Filed Feb. 25, 1935 3 Sheets-Sheet l INVENTOR fIrt/mr WHerrmgton,

ATTORNEYS Feb. 25, 1936. r A. w. HIERRINGTON I 2,032,318

TRANSMI S SION GEARING Filed. Feb. 25, 1955 Ma 4%.. 1. zea 2'4 ii If 6 IIIA liar/ll INVENTOR H rzhur WHerrmgtog ATTORNEY5 3 Sheets-Sheet 2 Patented rab 1936v PATENT OFFICE TBANSLHSSIQN GEARING Arthur W. Herringtom Indianapolis, Ind., as-

- signor to Marmon-Herrlngton Company, Inc

l rrdianapolis. Ind., a corporation oi Indiana Application February '25, 1935. Serial No. 1,918 1 Claim. (Cl. 184-11) The object of my present invention is to provide an improved power takeoff for use in automobiles for transmitting power from the motor to the front traction wheels.

' The accompanying drawings illustrate my ventlon. I i I Fig. 1 is a side elevation, in partial vertical secing my invention;

Fig. 2 a section, on an enlarged 2-2 of Fig. 1;

- Fig. 3 a section on scale, on line the scale of Fig. 2 on line Fig. 4' a fragmentary section on line H of Fig. 3;

Fig. 5 a fragmentarysection online 6-! of I F18. v y F1Fig3. 6 a fragmentary section on line 6-6 of 8. v Fig. '1 a section on line 1-1 of Fig. 3; and Fig. 8 a section on lines-6 of Fig. 3. I In' the drawings It indicates the chassis frame. II the front traction wheels, I2 the usual speed and direction-varying transmission gearing and It the usual torque tube leading to the-rear wheels of an automobile, said torque tube housing the usual shaft for transmission of power to the rear wheels (not shown). l4, l6-- indicate cross bars forming part of the chassis frame.

fat

My present improvement relates to a speedvarying power takeoff through which power is supplied to the front traction wheels. This power takeoitcomprises a main shell or casing 20 having parallel'bearing-receiving openings 2|, 22-

casing member it provided with aligned bear-1 ing-receiving cups II and 32 in which are respectively mounted tifrictlon bearings 32 and Perforations 2 and 25 respectively carry anti-friction bearings 35 and 26 and are respectively covered by cover plates 31 and 36. Perforations 23 and 26 respectively carry anti-friction bearings 39 and 40 which are respectively retained in place by a ring 4| and supplemental cover 42.

Mounted in perforation 2| is an anti-friction bearing 43 which is axially aligned with bearing 33. Journaled in bearing 36 is a power delivery shaft 45 provided with gear 45 and adapted to be connected to the shaft which is mounted with-.

tion, of the front end of an automobile embody- I I -ment by a series of clutch teeth ill formed within gear. I

Journaled in bearings 66 and 66 is a shaft II which carries a gear 64' in mesh with gear 46 and a gear 56 which may be meshed by gear 49 when said gear is withdrawn from the clutching 10 teeth Ill. v

Journaledin the bearings 38 and 40 is a power takeofl shaft 56 which is adaptedto be connected to the shaft Bl (Fig. l) which leads to the front I traction wheels. Shaft 56 carries a gear 66 which 1| meshes with gear 54. I I

The power takeoii structure described above is pivotally supported about the axis of shafts 46 and 46,- upon the chassis cross bars and ,II in such position that the plane of the axes'of go its severalshafts inclines downwardly and outwardly, as indicated in Fig. 3, and the lower end of this casing is anchored upon one side bar of the chassis frame by any suitable means (not -shown).' The peripheral wall 65 of casing 26 is 5 contoured substantially as shown in Fig. 3, one portion, in the vertical plane ofgear 65 and oifset relative to the vertical plane of gears 46, 54 and 60 to form an adequate oil sump 66' and in another portion 61, in the plane of the gears so 46, 54 and 60 substantially parallel with the plane of the axes of those gears but substantially spaced from the peripheries of the gears and 60. Substantially paralleling theportion 61 in a line fairly close to the periphery of gear 54, with 35 its respective ends closely adjacent the peripheries of gears-46 and 60, is a partition 66 which springs'from a vertical partition '69 which lies parallel .with the open face oi casing 20 and is spaced therefrom a distance approximating the 40 widths of gears 46, 64 and 60, thereby forming an oil channel It leading upwardly from the lower regions of the casing 20 adjacent the periphery of gear 66 to and beyond gear '46. The free end of this partition 68 mates with cover 26', as i'ndi- 45 cated in Figs. 5 and 6. Partition 69 is notched, as indicated at 68' (Fig. 3) to lie closely adjacent the periphery of gear '46 into theup'per regions of casing 20 where it joins with the cross partition 1i spaced below the top portion of wall 50 to form an'oil reservoir I2 into which oil is thrown by gear 46 through a passage 13. I

Cover.26' is" perforated at 14 to aflord e for oil from chamber 1: mm the interior-l6 .01

to the bearings 33 and M. Leading from chamber 15 is a passage II which leads to bearing 36. An inspection opening III formed through wall I is covered by a removable cover ll.

In use oil is maintained in sump I at a level above the lowest portion of the orbit of the teeth of gear 55 and the gears rotate in the directions indicated by the arrows in Fig. 3, so that a certain portion of oil from' the sump is carried by gear ill to gear 54 and thence to gear 46, while another portion is delivered by the teeth of gear Bl into the lower end of passage 10 and driven upwardly therethrough into engagement with the periphery of gear 46 which boosts it through passage into chamber 12, thereby providing an adequate supply of oil for bearings l3, l4 and 36.

I claim as my invention:

A front-wheel driving train for automobiles comprising, a casing embodying an oil retaining sump, a multiplicity of gear-carryin shafts arranged in an inclined series, a train of successively meshing gears carried by said shafts with the lower portion or the lowest gear in said sump, an oil passage formed within said casing with its lower end in the plane of and tangentially to the periphery of the lowermost gear, in position to receive oil discharged tangentially therefrom and to deliver said oil to the periphery of the uppermost gear, a wall hugging the periphery of the uppermost gear with its upper end above said uppermost gear, sai'd wall forming an upwardly directed continuation of said oil passage toward bearings within the casing.

ARTHUR W. HERRINGTON. 

